深圳市辉之阳实业有限公司

SN2040DSQR 数量充足，代理渠道

The SN2040 is a highly integrated Li-Ion and Li-Pol linear charger device targeted at space-limited portable applications. The device operate from either a USB port or AC adapter. The high input voltage range with input overvoltage protection supports lowcost unregulated adapters. The SN2040 has a single power output that charges the battery. A system load can be placed in parallel with the battery as long as the average system load does not keep the battery from charging fully during the 10 hour safety timer. The battery is charged in three phases: conditioning, constant current and constant voltage. In all charge phases, an internal control loop monitors the IC junction temperature and reduces the charge current if an internal temperature threshold is exceeded. The charger power stage and charge current sense functions are fully integrated. The charger function has high accuracy current and voltage regulation loops, charge status display, and charge termination. The pre-charge current and termination current threshold are programmed through an external resistor on the SN2040. The fast charge current value is also programmable through an external resistor.